Good product and ground extremely fine and absolutely clean. I used it as part of an all purpose gluten free flour. The bag was not properly sealed at the factory so I gave it only five stars. I ordered this same product from another distributor of Bobs Mill and it had the same leaky bag. The bags apparently are not air tight so I empty them into a mason jar and suck out all the air, otherwise it makes quite a mess in the cupboard. I've given the same review as the potato starch because it was exactly the same kind of problem.